CL210 - Block-Migration Lab - CPU Unacceptable

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Has anyone else run into CPU unacceptable errors when doing this migration? It was fine when I migrated it from compute1 to compute0 when but when I tried to get it to migrate back from compute0 to compute1 it failed with a CPU error.

Unacceptable CPU info: CPU doesn't have compatibility.

As far as I can tell with an lscpu the only minor difference is in the MHz speed on the two compute nodes. Some things I googled suggested going into /etc/nova/nova.conf and changing cpu_mode to none but it's already at that.

How are we supposed to fix this if it fails like this in the exam?

Responses

Hi Lin Lancaster,

Say, anyone having this issue ought to do an sosreport on the system where this failed (right after it happens) and then submit a ticket with Red Hat (tell them the sosreport is on the lab machine, you may not be able to upload it)

So Lin Lancaster, sorry you're having trouble with your lab. You might not be aware of this, your Red Hat Learning Subscription is a supported product. I recommend you submit a case with Red Hat. Community support may not be the best avenue to get your issue resolved.

  • Go to this link: https://access.redhat.com/support/cases/, which is at the top of this page too, named SUPPORT CASES.
  • In the Product drop down, select: Red Hat Online Learning (NOTE: You will need to scroll down through a list in the drop-down menu)
  • Important, in the Product Version drop down, select the largest number (as I type this, it is 1.0, but that may change over time) NOTE: the "Submit" button won't activate until this is selected.
  • In the Case Type drop down, select: Other
  • In the Problem Statement block, enter something concise, the course number, and a small description.
  • In the Case Description block, enter the specifics.

The other blocks are straightforward enough. When I've submitted a ticket for Red Hat Online Learning, I make it a low priority, it certainly is not production. One of the course administrators does on occasion check the forum, but you ought to submit a ticket for this issue since this is supported.

The Training Principal Product Manager also highly recommends submitting a case for this, as the experiences of one customer in resolution may not necessarily work with another (paraphrasing) see this link, it leads to his comments So if another person does have this CPU issue you cite, they too should submit a ticket.

Kind Regards,

-RJ

Thanks - I did not know I could open a case on a problem with the Learning Subscription. I'll do that.

Gladly, they encourage cases for things you're going through with Labs and so forth!

Kind Regards

-Rj

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